3-Cone diffuser

ABSTRACT

3-Cone Diffuser including a central cone ( 1 ), an intermediate cone ( 2 ) and outer cone or outer frame ( 3 ) placed one above the other in a spaced apart relationships having same vertical axis ( 14 ). The central cone ( 1 ) at the back is provided with bracket ( 8 ) spot welded or brazed or rivetted directly or via an intermediate plate to the central cone to hold the centre cone which is fixed on the intermediate cone with the central opening ( 15 ) having outwardly projected flanges ( 16 ) having holes ( 17 ) to accommodate the front ( 18 ) and back ( 19 ) support of the bracket. The back support is provided with springs ( 9 ) for easy removal of the bracket, thereby enabling dismantling the central cone easily. The intermediate cone ( 2 ) on its outer flanges of the central opening ( 15 ), provided with pipe/rod ( 6 ) with spring ( 7 ) welded or brazed so as to fix the intermediate cone on the brackets ( 5 ) provided in the inner part of the outer cone enabling dismantling the intermediate cone by a slight pressing of the biasing spring ( 7 ). The outer cone ( 3 ) has a central inlet ( 20 ) with flanged portion outwardly directed ( 4 ) to connect with the ducting or damper. The inlet is adjustable as per the requirement of the ducting and the central cone is further provided with a hole ( 10 ) to adjust the aperture of the damper.

The invention relates to Air Diffuser used in the air conditioningsystem. More particularly an air diffuser having multiple cones whichcan be fitted or dismantle easily in the air ducting arrangement.

The conventional air diffusers are difficult to be fitted with the airducting installation and dismantling is difficult requires lot of manpower and downtime.

Therefore there is a need to develop an air diffuser which can fitted ordismantle easily and is suited to any shape or size of air ductingarrangement.

The primary object of this invention is to provide an air diffuser withmultiple cones which is easy to be fitted or dismantle with any type ofair ducting arrangements.

The another object of this invention is to provide single piece conefitted one above the other with fitting arrangement which is fitted withthe air ducting arrangement easily and dismantling like way are easy.

The still another object of this invention is to provide fittingarrangement which is simple and easy to manipulate.

Accordingly there is provided a new three cone air diffuser made up ofnormally in Steel or Aluminium comprising of a Central Plate or CentralCone, Intermediate Cone and an Outer frame which is fitted with eachother by means of at least a pair of spring loaded pipes fitted to eachcone and facilitating easy removal of each cone from each other.

The Outer frame (3) made out of a piece of sheet, generally Aluminium orSteel framed with a flanged neck at the centre with variable hole sizeto fit different sizes of ducts inlet, normally circular but can besquare or other shape as matching with the duct contains or more strapsfor fixing of the spring loaded pipes/rods of bell shaped constructionon the back of the inner cone assembly comprising of inner cone and thecentre cone.

The cone assembly comprising of inner cone(s) and central cone fittedwith each other by spring loaded assembly.

The central cone made up of single sheet attached with a bracket to holdthe inner cone fitted by means of welding, spot welding, brazing orriveting with or without in-between plate for extra strength or by anyother means of fixing purpose of holding the centre cone from theintermediate cone at a particular distance, generally fixed but can bemade variable by adjusting the height of the bracket, spring loaded tohold in the place bracket, spring loaded to hold in the same place tomake able to remove the assembly when required quickly and easily. Theouter frame (3) of the diffuser has a neck on the backside generallyround in shape with a vertical collar (4), which fixes with the openingof the duct. From the vertical collar, the outer extends horizontallyand then forming a bell like shape and then having a horizontal flatflange at the earlier edge. The outer edge is generally in square shapebut can be blended to form different shapes like square or others. Theflat surface of the outer frame containing one or more pains ofprojections which can be used as an additional support to the diffuserfor having to the duct or ceiling. It also comprises at least a pair ofslots (12), which are used for fixing brackets (5) for fixing of innercone assembly.

The intermediate cone is made up of sheet of required size, normallyAluminium of Steel is having an opening, generally square or round atthe centre, again a bell shaped structure but with lesser angle than theouter frame and a flat edge outwardly projected at the outer side of theopening which is generally of square shape. It contains at least twopairs of slots for fixing of the centre cone to form the cone assembly.

The invention will now be described with reference to FIGS. 1 to 13 inthe accompanying drawings:—

FIG. 1 is the elevation of the New 3-Cone Diffuser

FIG. 2 is the top view of the front side of the central cone of airdiffuser.

FIG. 3 is the top view of the back side of the front central coneshowing the bracket spot-welded on the back of central cone which isused to assemble intermediate cone with the central cone.

FIG. 4 is the side view of the central cone.

FIG. 5 is the top view of the front side of the intermediate cone of theair diffuser.

FIG. 6 is the top view of the backside of intermediate cone of the airdiffuser.

FIG. 7 is the side view of the intermediate cone.

FIG. 8 is the plan view of the backside of outer cone of air diffuser.

FIG. 9 is the side view of the outer cone of air diffuser.

FIG. 10 is the elevation of the outer frame with general duct outletfixed to its neck

FIG. 11 is the elevation of the pipe/rod, which fits into bracket ofbell shaped construction

FIG. 12 is spring/biasing mean which will put around the back support tourge against the bell portion of pipe/rod and the outer framing.

FIG. 13 is the top view of the bracket fitted on the innermost or centrecone, the flat portion of the bracket is welded or brazed or riveted tothe back of the inner cone, sometimes with a plate in between foradditional strength and the two front legs and two back legs of bellshaped construction at their ends are used to put the spring around thenarrow portion so that the spring urges against the bell portion and theouter framing of the intermediate cone placed over to fix intermediatecone over the inner cone.

Referring to FIGS. 2 to 9 the new 3 cone Diffuser consisting of acentral cone (1), an intermediate cone (2) and outer cone or outer frame(3) placed one above the other in a space apart relationships havingsame vertical axis (14) wherein the front central cone (1) made fromsingle piece is attached to the intermediate cone (2) by means of fixingbracket (8) which is welded on the back of the front central cone; thesaid fixing bracket is welded, brazed or riveted on the back of thecentral cone. The bracket may be attached to a metal plate, which isattached to the central cone. The bracket (8) is also a single piecemade from metal having four legs two at front and two at the back. Theback legs are provided with springs (9) the legs are pushed in thegrooves of the flanges (17) of the small flat vertical flange (13) onthe back of intermediate cone; the front two legs go into the grooveswherein the springs are urging against the flange projected portionthereby the central cone is held in position at the below of theintermediate cone; while dismantling the bracket is pushed back and thespring is compressed therefore the front legs come out of the groovesthereby removing the bracket with central cone from the intermediatecone; the intermediate cone (2) is also made from single piece of metalhaving central opening (15) with outwardly projected flanges the saidflange is provided with two sets of grooves for fixing the central conebracket and other to sides are welded with pipes/rods (6) with springwound on the end of two pipes. The said pipes are used to fix the outerframe (3) in the brackets provided (5) four in number engaged in theslots (12) at the inner side of the outer most frame thereby retainingthe intermediate cone below the outer cone by means of pipes/rods (6)with biasing means (7) thereby fixing it easily by pushing one sides ofthe rod into the grooves of the bracket and the other side the pipe goesin the bracket against the spring thereby while dismantling the springof the pipe is compressed to remove the free end of the pipe from thegrooves of the bracket thereby dismantling the intermediate cone fromthe outer frame.

3 Cone Diffuser comprising a central cone (1), an intermediate cone (2)and outer cone or outer frame (3) placed one above the other in a spacedapart relationships having same vertical axis (14); the said centralcone (1) at the back is provided with bracket (8) spot welded or brazedor rivetted to hold the centre cone which is fixed on the intermediatecone in the central opening (15) having outwardly projected flanges (16)having holes/slots (17) to accommodate the front (18) and back (19)support of the bracket, the said back support is provided with springs(9) for easy removal of the bracket, thereby dismantling the centralcone easily; the intermediate cone (2) on its outer flanges of thecentral opening (15) provided with pipe/rod (6) with spring (7) iswelded or brazed so as to fix the intermediate cone on the brackets (5)provided in the inner part of the outer cone so as to dismantle theintermediate cone by a slight pressing of the biasing means (7), thesaid outer cone (3) having central inlet (20) with flanged portionoutwardly directed (4) to connect with the ducting or damper; said inletis adjustable as per the requirement of the ducting; the central cone isfurther provided with a hole (10) which may be covered by some removablepiece to adjust the aperture of the damper.

Accordingly there is provided a new three cone air diffuser comprisingas 3 cone diffuser is made up of normally in Steel or Aluminiumcomprising of a Central Plate or Central Cone, Intermediate Cone and anOuter frame which is fitted with each other by means of at least a pairof spring loaded pipes fitted to each cone and facilitating easy removalof each cone from each other.

The Outer frame (3) made out of a piece of sheet, generally Aluminium orSteel framed with a flanged neck at the centre with variable size to fitdifferent sizes of ducts inlet/outlet, normally circular but can besquare or other shape as matching with the duct.

The cone assembly comprising of intermediate cone(s) and central conefitted with each other by spring loaded assembly.

The Inner cone made up of single sheet attached with a bracket to holdthe inner cone fitted by means of welding, spot welding, brazing orrivetting or any other means of fixing purpose of holding the centrecone from the intermediate cone at a particular distance, generallyfixed but can be made variable by adjusting the height of the bracket,spring loaded to hold in the place bracket, spring loaded to hold in thesame place to make able to remove the assembly when required quickly andeasily.

The outer frame (3) of the diffuser has a neck on the backside generallyround in shape with a vertical collar (4), which fixes with the openingof the duct. From the vertical collar, the outer extends horizontallyand then forming a bell like shape and then having a horizontal flatflange at the earlier edge. The outer edge is generally in square shapebut can be blended to form different shapes like square or others. Theflat surface of the outer frame containing one or more pairs ofprojections which can be used as an additional support to the diffuserfor fixing to the duct or ceiling. It also comprises at least a pair ofslots (12), which are used for fixing brackets (5) for fixing of innercone assembly.

The intermediate cone is made up of sheet of required size, normallyAluminium of Steel is having an opening, generally square or round atthe centre, again a bell shaped structure but with lesser angle than theouter frame and a flat edge at the outer side which is generally ofsquare shape. It contains at least two pairs of slots for fixing of thecentre cone to forms the cone assembly.

This is an embodiment of the invention several modifications arepossible, which may be considered within the ambit and spirit of thisinvention. Since any modification, variations and changes in detail maybe made to the above described embodiment it is intended that all matersdescribed in the foregoing description and illustration in theaccompanying drawing may be considered within the spirit of thisinvention.

1-7. (canceled)
 8. A 3-cone diffuser, comprising: a central cone havinga front and a back; an intermediate cone having a front and a back, anda central opening; an outer cone having a front and a back, and acentral opening; a first bracket fastened to the back of said centralcone, the first bracket removably attaching said central cone to saidintermediate cone; and a second bracket fastened to the back of saidintermediate cone, the second bracket removably attaching saidintermediate cone to said outer cone; wherein said central cone,intermediate cone, and outer cone are assembled one above another in aspaced-apart relationship.
 9. The diffuser according to claim 8, furthercomprising an aperture defined and centrally located in said centralcone.
 10. The diffuser according to claim 8, wherein said first bracketcomprises a pair of front legs and a pair of rear legs.
 11. The diffuseraccording to claim 10, wherein said front and rear legs each terminatein a bell-shaped end portion having a narrow end part and a wider innerpart.
 12. The diffuser according to claim 10, wherein said intermediatecone further comprises a plurality of outwardly projecting flangesformed on the back adjacent to said central opening, each of the flangesdefining at least one aperture, wherein said front and rear legs engagewith the apertures of the outwardly projecting flanges.
 13. The diffuseraccording to claim 12, further comprising a compression spring disposedon each said rear leg, whereby said bracket is biased for retaining saidfront legs in engagement with said outwardly projecting flanges.
 14. Thediffuser according to claim 10, wherein said first bracket furthercomprises a plate, said front and rear legs being connected to andextending from the plate.
 15. The diffuser according to claim 14,further comprising an aperture defined through and centrally located insaid plate.
 16. The diffuser according to claim 8, wherein said secondbracket comprises a pair of rods fastened to the back of saidintermediate cone next to said central opening.
 17. The diffuseraccording to claim 16, wherein each of said rods terminates with a bellshaped portion having a narrow outer part and wider inner part.
 18. Thediffuser according to claim 16, wherein said outer cone furthercomprises a plurality of fixing brackets formed on the front adjacent tosaid central opening, each of the fixing brackets defining at least oneaperture, wherein the ends of said rods engage with the apertures of thefixing brackets.
 19. The diffuser according to claim 18, furthercomprising a compression spring disposed on one end of each of saidrods, whereby opposite ends of said rods are biased into engagement withsaid fixing brackets.
 20. The diffuser according to claim 8, whereinsaid central cone is formed from a single metal sheet.
 21. The diffuseraccording to claim 8, wherein said intermediate cone is formed from asingle metal sheet.
 22. The diffuser according to claim 8, wherein saidouter cone is formed from a single metal sheet.
 23. The diffuseraccording to claim 14, wherein said front and rear legs are formedintegrally with said plate.